These periphrase forms are rarely used in the order we have
given, they are partly separated, partly transposed by inserted
words.

Skal is used in an obligatory and assured sense. After
man or skal — verða or vera is frequently left out. Verais used for the present time, which has begun, verða, for the
future time, which is now beginning, man and skal for the
future time, not yet begun.

158. The Passive form in -st, has also derivatives, as:

ek

man kallast

teljast

-

munda kallast

teljast

-

hefi kallazt

talizt

-

hafða kallazt

talizt etc.

V. Particles.

159. This class of words, generally not inflected, take a
comparison, they form the Comparative in -a, the Superlative
in -ast; some have shorter forms in -r, -st: